期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 30, 期 1, 页码 917-929出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-22265-9
关键词
Laccase; Fe3O4@Fe(0); Immobilization; Methoxychlor degradation
This study successfully demonstrated the effective degradation of MXC in wastewater and soil using a catalyst, along with the identification of its metabolites and proposed degradation mechanism. The findings hold great significance for the environmental remediation of MXC and provide a new perspective for future environmental restoration.
The presence of methoxychlor (MXC) in soil and wastewater is considered a nonnegligible environmental threat. Herein, Fe3O4@Fe(0) was obtained by NaBH4 reduction of Fe3O4 nanoparticles and served as a carrier for laccase to construct catalyst. The catalyst was evaluated for the degradation of MXC in treated wastewater and soil with 2, 2 '-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) being used as cocatalyst. The removal rate of MXC in wastewater and soil was found to be 89% and 88% in optimum conditions, and the influences of initial MXC concentration, pH, and temperature on the degradation rate were evaluated. The metabolites including 2-methylpentane, 3-methylpentane, and n-pentane of MXC were identified, and possible degradation mechanisms were proposed. Overall, this work successfully demonstrates not only the ability to degrade MXC in different circumstances but also provides a new idea for environmental remediation in the future.
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